These points are also on the negative side of the x axis, at -pi/4 and -pi/2. When we move along the x axis, notice what happens to the y value. On the left side of zero, tangent is negative. At x=-pi/4, tangent=-1.
The Independent Online. David Cameron may have called a referendum on the EU to blackmail Europe, according to Vladimir Putin. The Russian president also questioned Mr Cameronâs decision to call the vote, as it has caused a âgreat problemâ.
Vladimir Putin takes the Presidential Oath in 2012 while placing his right hand on the Presidential copy of the Russian Constitution. Inauguration of the President of Russia is conducted six years after the inauguration of the previous president. If the President was elected in early elections, he takes the oath, thirty days after the announcement of the results.